I did some further research and the only 4 times that Dak has won a game without a running game was against the worst team in the league in the last few years. They are the Lions, Falcons, Eagles, and Giants.
You think Dak would score 33 touchdowns in his rookie season while having the worst O-line in the league like Herbert? Dak struggle with a bad O-line and no running game. Hell Jared Goff beat the Chiefs (Greatest MNF game of all time), Saints (NFCCG), and the Vikings (TNF best perfect passer rating game in history) without a running game.
Sorry not sorry, Dak can't win games without a running game. The Cowboys are the most complete team in the NFL this year so of course Dak is going to look good. Stafford, Herbert, Mahomes, Rodgers, Murray and others don't need a run game to win games.
Your stats don't matter because Herbert is a 2nd year player in a brand new system with a new headcoach and OC. Even the Chargers defense don't have an identity until their 4th game into the season. See what I mean when you take stats without context? We are a contender with Dak as QB but if we had Herbert, we are SB favorite, and that is the differences. How confident are you if something were to happen to our running game? Dak has never shown the ability to win games with a running game except against the worst team in the league. Yet somehow he better than every other QB in the league? What planet are you living on, it one thing to be a fan of the team, its another to be realistic about the situation.
You know Jared Goff would still look really good if Gurley didn't get injure.